<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8" />
		<title></title>
		<link rel="stylesheet" type="text/css" href="css/第一天less.css"/>
		<style type="text/css">
		
		
		
		
		
		
		.box1{
			animation: wo 1s ease infinite;
		}
		
		
		
		/*less也是第三方，功能：快速自动生成css文件。*/
		</style>
	</head>
	<body>
		<div class="box1">
			
		</div>
		<div class="box2">
			
		</div>
		<div class="box3">
			
		</div>
	</body>
</html>
